Chemistry · EQUILIBRIUM

For the dissociation of gaseous hydrogen iodide, \( 2\text{HI}(\text{g}) \rightleftharpoons \text{H}_2(\text{g}) + \text{I}_2(\text{g}) \), if the degree of dissociation is \( \alpha \), the equilibrium constant \( K_c \) in terms of \( \alpha \) is:

1. A
   \( \frac{4\alpha^2}{(1-\alpha)^2} \)
2. B
   \( \frac{\alpha^2}{(1-\alpha)^2} \)
3. C
   \( \frac{\alpha^2}{4(1-\alpha)^2} \)
4. D
   \( \frac{\alpha^2}{2(1-\alpha)} \)